Case for a tool box



FIG. 1 is a perspective view of a case for a tool box showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view of the case for a tool box shown in a state of use on a tool box.

The broken lines showing of a tool box in FIG. 8 depict environmental structure and form no part of the claimed design. All other broken lines depict portions of the case for a tool box that form no part of the claimed design. 

CLAIM The ornamental design for a case for a tool box, as shown and described. 